JP7616846B2 - Eaves - Google Patents

Description

This disclosure relates to eaves installed on the exterior walls of buildings.

Eaves are installed above the openings of a building, protruding from the exterior wall, and serve to provide shade and protection from rain (see, for example, Patent Document 1).

JP 2008-223346 A

Conventional eaves can block solar heat in the summer, but in the winter they have the problem of blocking the solar heat that you want to let into the room. In addition, conventional eaves do not transmit light, so less light enters and it becomes dark. It becomes dark especially in the summer and the view becomes narrow. There are things like louver eaves that are a mechanism for taking in solar heat in the winter, but they still block the incoming light in the summer, so it becomes dark in the summer and the view feels narrow.

This disclosure was made in consideration of these issues, and its purpose is to provide a canopy that can switch between blocking solar heat and taking in solar heat.

In order to solve the above problems, a certain aspect of the eaves disclosed herein is an eaves provided on the exterior wall of a building. This eaves comprises a translucent upper panel having a plurality of strip-shaped solar heat reflecting or absorbing films formed on its underside at a predetermined interval, a translucent lower panel arranged parallel to the upper panel having a plurality of strip-shaped solar heat reflecting or absorbing films formed on its upper side at a predetermined interval, and a panel movement mechanism that moves one of the upper panel and the lower panel toward and away from the other.

FIG. 2 is a schematic cross-sectional view for explaining a canopy according to an embodiment of the present disclosure. 13 is a diagram showing a state in which the lower panel has been moved by the panel moving mechanism. FIG. 3A and 3B are diagrams for explaining the function of the canopy according to the embodiment of the present disclosure. 4(a) and 4(b) are diagrams showing an embodiment of the panel moving mechanism. 5(a) and 5(b) are diagrams showing another embodiment of the panel moving mechanism. 6(a) and 6(b) are diagrams showing still another embodiment of the panel moving mechanism.

The present disclosure will be described below with reference to the drawings based on preferred embodiments. The same or equivalent components and parts shown in each drawing will be given the same reference numerals, and duplicated explanations will be omitted as appropriate. The dimensions of the parts in each drawing will be enlarged or reduced as appropriate to facilitate understanding. Some parts that are not important for explaining the embodiment will be omitted in each drawing. In addition, when terms indicating directions such as "up," "down," "front," "back," "left," "right," "inside," and "outside" are used in this specification, they refer to the directions in the position in which the eaves are installed on the building.

Figure 1 is a schematic cross-sectional view illustrating a canopy 10 according to an embodiment of the present disclosure. The canopy 10 is provided above an opening 100 of a building in which a window pane 101 is arranged, protruding laterally from an exterior wall 102.

As shown in FIG. 1, the eaves 10 includes an upper panel 11 and a lower panel 12 that are translucent. The upper panel 11 and the lower panel 12 are arranged parallel to each other. The upper panel 11 and the lower panel 12 may be glass panels or resin panels (e.g., polycarbonate or acrylic).

In FIG. 1, the upper panel 11 and the lower panel 12 extend horizontally, but they may be installed so that they slope downward in the protruding direction P of the eaves 10 (i.e., the direction from the base 20 toward the tip 21).

In the eaves 10 according to this embodiment, a plurality of strip-shaped solar heat reflecting films 14 are formed on the underside 11a of the upper panel 11 at a predetermined interval B in the protruding direction P. Similarly, a plurality of strip-shaped solar heat reflecting films 15 are formed on the upper side 12a of the lower panel 12 at a predetermined interval B in the protruding direction P. The width A of the solar heat reflecting films 14, 15 is approximately the same as the interval B. The width A and interval B may be several mm to several cm.

The solar heat reflective films 14, 15 have high visible light transmittance and the ability to reflect solar heat, and may be made of, for example, titanium, stainless steel, tin, chrome, etc.

The upper panel 11 and the lower panel 12 are arranged parallel to each other so that the solar heat reflecting films 14 and 15 face each other. In FIG. 1, for the purpose of explanation, the thickness of the solar heat reflecting films 14 and 15 is shown larger than it actually is. The thickness of the solar heat reflecting films 14 and 15 is about 0.1 mm, so there are almost no irregularities. Therefore, please note that in reality there is almost no gap between the lower surface 11a of the upper panel 11 and the upper surface 12a of the lower panel, and the lower surface 11a of the upper panel 11 and the upper surface 12a of the lower panel are in a state of almost abutment.

In this embodiment, the lower panel 12 is supported so as to be movable in the protruding direction P relative to the upper panel 11 fixed to the exterior wall 102. The support structure of the lower panel 12 is not particularly limited. For example, guide rails may be arranged on both ends of the upper panel 11 and the lower panel 12 in a direction perpendicular to the protruding direction P, so that the lower panel 12 is supported so as to be movable relative to the upper panel 11.

The eaves 10 according to this embodiment further includes a panel movement mechanism 30. This panel movement mechanism 30 moves the lower panel 12 back and forth relative to the upper panel 11 in the protruding direction P. In FIG. 1, the panel movement mechanism 30 is configured to act on the end of the lower panel 12 on the outer wall 102 side, and is shown as being located within the outer wall 102, but its point of action and position are not particularly limited.

Figure 1 shows a state in which the lower panel 12 has not been moved relative to the upper panel 11. In this state, the solar heat reflecting films 14, 15 are in approximately the same position in the protruding direction P (i.e., the solar heat reflecting films 14, 15 overlap each other), and a gap 16 exists between the solar heat reflecting films 14, 15.

Figure 2 shows the state in which the lower panel 12 has been moved by the panel movement mechanism 30. In Figure 2, the lower panel 12 has been moved a distance C in the protruding direction P relative to the upper panel 11. Distance C is approximately the same as width A and spacing B. Therefore, when the lower panel 12 has been moved, the solar heat reflecting films 14 and 15 are positioned alternately in the protruding direction P, and no gaps exist between the solar heat reflecting films.

Figures 3(a) and 3(b) are diagrams for explaining the function of the canopy 10 according to the embodiment of the present disclosure. Figure 3(a) shows the state of use in winter, and Figure 3(b) shows the state of use in summer. Figures 3(a) and 3(b) show the solar radiation heat from the sun.

As shown in FIG. 3(a), in winter when the solar altitude is relatively low, the lower panel 12 is not moved relative to the upper panel 11, i.e., the solar heat reflecting film 14 and the solar heat reflecting film are in approximately the same position in the protruding direction P, and a gap 16 exists between the solar heat reflecting films 14, 15. Therefore, a portion of the solar heat can be taken in to the inside of the window glass 101 (i.e., the room) through this gap 16 (incident heat). In this way, with the eaves 10 of this embodiment, the necessary solar heat can be taken in to the room in winter, and the solar heat acquisition rate can be relatively high.

On the other hand, as shown in FIG. 3(b), in summer when the solar altitude is relatively high, the lower panel 12 is moved in the protruding direction P relative to the upper panel 11 by the width A (spacing B) of the solar heat reflecting films 14, 15, i.e., the solar heat reflecting films 14 and 15 are positioned alternately in the protruding direction P, and no gap exists between the solar heat reflecting films 14, 15. Therefore, the solar heat is reflected by the solar heat reflecting films 14, 15 and released (reflected heat) to the upper side of the eaves 10 (i.e., in the direction away from the window glass 101). In this way, according to the eaves 10 of this embodiment, unnecessary solar heat can be blocked in summer, and the solar heat acquisition rate can be relatively low.

As described above, with the eaves 10 of this embodiment, it is possible to switch between blocking solar heat and taking in solar heat by moving the lower panel 12 relative to the upper panel 11 by only the width of the solar heat reflecting films 14, 15, i.e., only a few mm to a few cm. Unnecessary solar heat can be blocked in the summer, and necessary solar heat can be efficiently taken in in the winter, allowing efficient use of solar energy. Note that, for the purpose of making the explanation easier to understand, the use of the eaves 10 in the summer and winter has been described here, but it should be noted that the eaves 10 of this embodiment can block solar heat when the user feels hot, and take in solar heat when the user feels cold, regardless of the season.

In the eaves 10 according to this embodiment, the upper panel 11, the lower panel, and the solar heat reflecting films 14, 15 transmit visible light, so light can be effectively taken into the room, keeping the room bright. In addition, the eaves 10 according to this embodiment are nearly transparent to the eye, providing a sense of openness.

Figures 4(a) and 4(b) show an embodiment of a panel movement mechanism. The panel movement mechanism 40 shown in Figures 4(a) and 4(b) is an orthogonal slide mechanism, and includes a drive slider 42 and a driven slider 44. The contact portion 44a of the driven slider 44 is fixed to the end surface of the lower panel 12.

As shown in FIG. 4(a), when the driving slider 42 is pressed down while the lower panel 12 is not being moved relative to the upper panel 11, the driven slider 44 moves in the protruding direction P and presses the lower panel 12, moving the lower panel 12 in the protruding direction P relative to the fixed upper panel 11. As a result, the lower panel 12 is moved relative to the upper panel 11 as shown in FIG. 4(b).

On the other hand, as shown in FIG. 4(b), when the driving slider 42 is pushed up while the lower panel 12 has been moved relative to the upper panel 11, the driven slider 44 moves in the opposite direction to the protruding direction P, pulling the lower panel 12 and moving the lower panel 12 in the opposite direction to the protruding direction P relative to the fixed upper panel 11. This results in a state in which the lower panel 12 is not being moved relative to the upper panel 11, as shown in FIG. 4(a).

Figures 5(a) and 5(b) show another embodiment of the panel movement mechanism. The panel movement mechanism 50 shown in Figures 5(a) and 5(b) is a slider-crank mechanism, and includes a crank 52, a slider 54, and a connecting rod 56 that connects the crank 52 and the slider 54. The contact portion 54a of the slider 54 is fixed to the end surface of the lower panel 12.

As shown in FIG. 5(a), when the crank 52 is rotated counterclockwise around the axis 51 while the lower panel 12 is not being moved relative to the upper panel 11, the slider 54 moves in the protruding direction P via the connecting rod 56 and presses the lower panel 12, moving the lower panel 12 in the protruding direction P relative to the fixed upper panel 11. As a result, the lower panel 12 is moved relative to the upper panel 11 as shown in FIG. 5(b).

On the other hand, as shown in FIG. 5(b), when the crank 52 is rotated clockwise around the axis 51 while the lower panel 12 is moved relative to the upper panel 11, the slider 54 moves in the opposite direction to the protruding direction P via the connecting rod 56, pulling the lower panel 12 and moving the lower panel 12 in the opposite direction to the protruding direction P relative to the fixed upper panel 11. This results in the lower panel 12 not being moved relative to the upper panel 11 as shown in FIG. 5(a).

Figures 6(a) and 6(b) show yet another embodiment of the panel movement mechanism. The panel movement mechanism 60 shown in Figures 6(a) and 6(b) is a cross slider mechanism, and includes a lever 62 and a slider 64. The contact portion 64a of the slider 64 is fixed to the end surface of the lower panel 12.

As shown in FIG. 6(a), when the lever 62 is rotated clockwise around the axis 61 while the lower panel 12 is not being moved relative to the upper panel 11, the slider 64 moves in the protruding direction P and presses the lower panel 12, moving the lower panel 12 in the protruding direction P relative to the fixed upper panel 11. As a result, the lower panel 12 is moved relative to the upper panel 11 as shown in FIG. 6(b).

On the other hand, as shown in FIG. 6(b), when the lever 62 is rotated counterclockwise around the axis 61 while the lower panel 12 has been moved relative to the upper panel 11, the slider 64 moves in the direction opposite to the protruding direction P, pulling the lower panel 12 and moving the lower panel 12 in the direction opposite to the protruding direction P relative to the fixed upper panel 11. This results in the lower panel 12 not being moved relative to the upper panel 11 as shown in FIG. 6(a).

Although three examples of panel movement mechanisms have been given above, it should be noted that other mechanisms can also be used. For example, a linear actuator using a motor or a hydraulic mechanism can be used as the panel movement mechanism.

The present disclosure has been described above based on an embodiment. This embodiment is an example, and it will be understood by those skilled in the art that various modifications and changes are possible within the scope of the claims of the present disclosure, and that such modifications and changes are also within the scope of the claims of the present disclosure. Therefore, the descriptions and drawings in this specification should be treated as illustrative rather than restrictive.

In the above embodiment, the solar heat reflecting film is formed in the protruding direction of the eaves on the main surface of the panel, but the solar heat reflecting film may be formed in any specified direction on the main surface of the panel.

The band-shaped solar heat reflecting film may be formed in a straight line without any interruptions, or in a straight line with some interruptions along the way.

In the above embodiment, a solar heat reflecting film is formed on the main surface of the panel, but instead, a solar heat absorbing film that absorbs solar heat may be formed. In this case, too, it is possible to switch between blocking solar heat and taking in solar heat. The solar heat absorbing film may be formed from, for example, iron, nickel, cobalt, etc.

In the above embodiment, the lower panel is moved relative to the fixed upper panel, but the upper panel may be moved relative to the fixed lower panel.

In the above embodiment, a canopy with two panels, an upper panel and a lower panel, was described, but the number of panels is not limited to two and more panels may be provided.

10 Eaves, 11 Upper panel, 12 Lower panel, 14 Solar heat reflective film, 15 Solar heat reflective film, 30, 40, 50, 60 Panel movement mechanism, 100 Opening, 101 Window glass, 102 Exterior wall.

Claims (4)

A canopy installed on the exterior wall of a building,
an upper panel having translucency, the upper panel having a plurality of band-shaped solar heat reflecting films or solar heat absorbing films formed at predetermined intervals on a lower surface thereof;
a lower panel having translucency and arranged parallel to the upper panel, the lower panel having a plurality of strip-shaped solar heat reflecting or absorbing films formed at predetermined intervals on an upper surface thereof;
a panel moving mechanism that moves one of the upper panel and the lower panel toward and away from the other;
Equipped with
The panel moving mechanism includes:
an orthogonal slide mechanism including a drive slider that can be pushed in a direction perpendicular to the direction of the forward and backward movement of the upper panel or the lower panel , and a driven slider that moves one of the upper panel and the lower panel forward and backward relative to the other in response to the pushing operation of the drive slider;
a slider crank mechanism including a rotatable crank and a slider that moves one of the upper panel and the lower panel toward and away from the other in response to the rotation of the crank;
a cross slider mechanism including a lever that can be rotated , and a slider that moves one of the upper panel and the lower panel forward and backward relative to the other in response to the rotation of the lever. The eaves of claim 1, characterized in that the width of the solar heat reflecting film or the solar heat absorbing film and the predetermined interval are approximately the same size. The awning described in claim 2, characterized in that the panel movement mechanism moves one of the upper panel and the lower panel back and forth relative to the other by a distance approximately equal to the width of the solar heat reflecting film or the solar heat absorbing film. The awning according to any one of claims 1 to 3, characterized in that the solar heat reflecting film or the solar heat absorbing film is transparent to visible light.

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